CN112255584A - Remote online calibration method for intelligent electric energy meter - Google Patents
Remote online calibration method for intelligent electric energy meter Download PDFInfo
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Abstract
The invention discloses a remote online calibration method for an intelligent electric energy meter, and relates to the technical field of electric energy metering. The method comprises the following steps: s1, arranging an electric energy meter end interface and a reserved check interface on the intelligent electric energy meter; s2, connecting one end of the acquisition equipment with an intelligent electric energy meter end interface, connecting the other end of the acquisition equipment with a merging unit for sampling the current voltage value of the intelligent electric energy meter, connecting one end of the acquisition equipment with a reserved check interface, connecting the other end of the acquisition equipment with a check meter, and connecting the acquisition equipment with the check meter; and S3, the acquisition equipment sends data requests to the check meter and the intelligent electric energy meter. The invention realizes the online verification of the intelligent electric energy meter, can utilize a remote server to manage and analyze the verification data of the tested electric energy meter, realizes the remote monitoring of the running state of the electric energy meter, improves the lean management of the electric energy meter and has good social benefit.
Description
Technical Field
The invention relates to the technical field of electric energy metering, in particular to a remote online calibration method for an intelligent electric energy meter.
Background
The development of electric power is related to resource allocation of the whole society, so that the reform and progress of the electric power market can mobilize various aspects of the society to carry out reasonable investment, reduce electricity price, reduce waste and the like, thereby bringing great economic benefits to the whole society, the reform of the electric power market puts forward new requirements on electric energy metering, such as electric energy quality and reactive power metering, remote automatic meter reading and verification and the like, the new requirements lead electric power departments of various countries to recognize the defects of the traditional induction type electric energy meter and management method, and the development of a novel electric energy metering and verification technology is greatly promoted.
Most of the traditional electric energy meters carry instruments and equipment by professionals to carry out periodic inspection on site, the period is long, and metering faults occurring between two inspections are difficult to find in time, so that the charging management is greatly influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a remote online verification method for an intelligent electric energy meter, which aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a remote online verification method for an intelligent electric energy meter comprises the following steps:
s1, arranging an electric energy meter end interface and a reserved check interface on the intelligent electric energy meter;
s2, connecting one end of the acquisition equipment with an intelligent electric energy meter end interface, connecting the other end of the acquisition equipment with a merging unit for sampling the current voltage value of the intelligent electric energy meter, connecting one end of the acquisition equipment with a reserved check interface, connecting the other end of the acquisition equipment with a check meter, and connecting the acquisition equipment with the check meter;
s3, sending a data request to the calibrator and the intelligent electric energy meter by the acquisition equipment, and acquiring real-time sampling data in a preset sampling time period fed back by the calibrator and the intelligent electric energy meter according to the data request, wherein the real-time sampling data comprises electric energy data, environmental information data and electric energy pulse data of the intelligent electric energy meter;
s4, the acquisition equipment acquires, A/D converts and time synchronizes the accessed signals, converts the signals into SMV sampling value messages which accord with IEC61850-9-2 protocol, converts the sampling value messages into HTTP messages, and transmits the HTTP messages to the preprocessing equipment at the rear end through the data network of electric power;
s5, the preprocessing device analyzes and stores the received HTTP message, after a verification command of the remote server is received, the preprocessing device sends the analyzed IEC61850-9-2SMV sampling value message and the electric energy pulse output by the intelligent electric energy meter to the verification instrument, the verification instrument verifies the intelligent electric energy meter according to the principle of real load verification of the intelligent electric energy meter and sends verification data to the preprocessing device, the preprocessing device sends the verification data to the remote server through the wireless transmission module, the remote server stores, analyzes and displays the verification data, and when the detected intelligent electric energy meter is abnormal or the error is over-poor, the remote server gives an alarm through the alarm unit.
The technical scheme is further optimized, the calibrator is used for measuring standard electric energy, acquiring display electric energy of the calibrated intelligent electric energy meter and carrying out error analysis on the standard electric energy and the display electric energy, the calibrator comprises a control module, a photoelectric conversion module, a receiving and transmitting module and an infrared communication module, the control module controls the calibrator through a control signal, the photoelectric conversion module and the receiving and transmitting module are used for receiving voltage or current sampling value messages, and the infrared communication module is used for reading historical data in the calibrated digital electric energy meter and setting parameters of the calibrated digital electric energy meter in a debugging mode.
The technical scheme is further optimized, the acquisition equipment comprises a channel switching module, an A/D converter module, a pulse acquisition module, a clock synchronization module, a controller module and a protocol converter module, the acquisition of multi-channel signals is supported, the acquired signals are converted into a group of time-synchronized digital signals, and the protocol completely conforms to the IEC61850-9-2 protocol of the digital substation.
The technical scheme is further optimized, the electric energy pulse data are standard electric energy pulse signals generated by processing voltage signals and current signals of the adopted intelligent electric energy meter in a sampling circuit in acquisition equipment through a metering chip, the metering chip adopts a metering chip of an RN8302 model, the sampling circuit is a current transformer and a resistance voltage divider, the electric energy data comprise discrete voltage information data and discrete current information data of the intelligent electric energy meter, and the environment information data comprise environment temperature data and environment humidity data of the running position of the intelligent electric energy meter.
Further optimizing the technical scheme, a processor in the preprocessing device is connected with the metering chip, the processor is connected with a pulse input interface and used for receiving an electric energy pulse signal to be tested input by the electric energy meter to be tested, comparing the electric energy pulse signal to be tested with the standard electric energy pulse signal to generate an error value, and storing and recording the error value, wherein the processor adopts an integrated chip of RN8312 type.
According to the technical scheme, the display unit displays the real-time sampling data of the intelligent electric energy meter according to the analysis and verification result, and the alarm unit is used for sending corresponding abnormal alarm information when the relative error of the intelligent electric energy meter is larger than the preset maximum allowable error and the analysis and verification result of the intelligent electric energy meter meets the preset alarm condition.
Advantageous effects
Compared with the prior art, the invention provides a remote online verification method for an intelligent electric energy meter, which has the following beneficial effects:
1. the remote online calibration method for the intelligent electric energy meter realizes online calibration of the intelligent electric energy meter, can timely discover various abnormal conditions of the intelligent electric energy meter on site, ensures the accuracy of the electric energy meter, has obvious economic benefit, can remind workers to overhaul at the first time, has higher working efficiency, reduces economic loss caused by abnormal electric energy meter or inaccurate measurement of the electric energy meter, can utilize a remote server to manage and analyze calibration data of the tested electric energy meter, and realizes remote monitoring of the running state of the electric energy meter.
2. According to the remote online verification method for the intelligent electric energy meter, whether the working conditions are met or not needs to be checked firstly before online verification, the running state of the electric energy meter is given according to the maximum allowable error determined by different field environment conditions, and the running state is used as an auxiliary judgment basis to judge whether the field verification of the electric energy meter needs to be carried out or not, so that the lean management of the electric energy meter is improved, a good enterprise image is established, the competitiveness of an enterprise is improved, and good social benefits are achieved.
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Fig. 1 is a schematic flow chart of a remote online verification method for an intelligent electric energy meter according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention discloses a method for manufacturing a rigid-flex board with inner layer slots, which comprises the following steps:
s1, arranging an electric energy meter end interface and a reserved check interface on the intelligent electric energy meter;
s2, connecting one end of the acquisition equipment with the intelligent electric energy meter end interface, connecting the other end of the acquisition equipment with a merging unit for sampling the current voltage value of the intelligent electric energy meter, connecting one end of the acquisition equipment with a reserved check interface, connecting the other end of the acquisition equipment with a check meter, meanwhile, the calibration instrument is used for measuring standard electric energy and acquiring display electric energy of the intelligent electric energy meter to be calibrated, and the tester analyzes the error of the standard electric energy and the display electric energy, the tester comprises a control module, a photoelectric conversion and receiving module and an infrared communication module, the control module controls the calibrator through a control signal, the photoelectric conversion and receiving module is used for receiving a voltage or current sampling value message, the infrared communication module is used for reading historical data in the calibrated digital electric energy meter, setting parameters of the verified digital electric energy meter in a debugging mode;
s3, the acquisition equipment sends data requests to the calibrator and the intelligent electric energy meter to acquire real-time sampling data in a preset sampling time period fed back by the calibrator and the intelligent electric energy meter according to the data requests, the real-time sampling data comprises electric energy data, environment information data and electric energy pulse data of the intelligent electric energy meter, the electric energy pulse data is that a standard electric energy pulse signal is generated by processing the voltage signal and the current signal of the adopted intelligent electric energy meter in a sampling circuit in the acquisition equipment through a metering chip, the metering chip adopts a metering chip of RN8302 type, the sampling circuit is a current transformer and a resistance divider, the electric energy data comprises discrete voltage information data and discrete current information data of the intelligent electric energy meter, the environment information data comprises environment temperature data and environment humidity data of the running position of the intelligent electric energy meter;
s4, the acquisition equipment acquires, A/D converts and time synchronizes the accessed signals, converts the signals into SMV sampling value messages which accord with IEC61850-9-2 protocol, converts the sampling value messages into HTTP messages, and transmits the HTTP messages to the preprocessing equipment at the rear end through the data network of electric power, the acquisition equipment comprises a channel switching module, an A/D converter module, a pulse acquisition module, a clock synchronization module, a controller module and a protocol converter module, supports the acquisition of multipath signals, converts the acquired signals into a group of time synchronized digital signals, and completely accords with the IEC61850-9-2 protocol of the digital substation;
s5, the preprocessing device analyzes and stores the received HTTP message, after receiving a check command of the remote server, the preprocessing device sends the analyzed IEC61850-9-2SMV sampling value message and the electric energy pulse output by the intelligent electric energy meter to the check meter, the check meter checks the intelligent electric energy meter according to the principle of real load verification of the intelligent electric energy meter and sends check data to the preprocessing device, the preprocessing device sends the check data to the remote server through the wireless transmission module, the remote server stores, analyzes and displays the check data, when the detected intelligent electric energy meter is abnormal or has an error exceeding, the remote server gives an alarm through the alarm unit, the processor in the preprocessing device is connected with the metering chip, the processor is connected with a pulse input interface and used for receiving the electric energy pulse signal to be detected input by the detected electric energy meter, and comparing the electric energy pulse signal to be detected with the standard electric energy pulse signal to generate an error value, storing and recording the error value, wherein the processor adopts an integrated chip of RN8312 type, the display unit displays the real-time sampling data of the intelligent electric energy meter according to the analysis and verification result, and the alarm unit is used for sending corresponding abnormal alarm information when the relative error of the intelligent electric energy meter is greater than the preset maximum allowable error and the analysis and verification result of the intelligent electric energy meter meets the preset alarm condition.
The working principle of the invention is as follows: the acquisition equipment is connected with an electric energy meter end interface, a reserved check interface and a check meter arranged on an intelligent electric energy meter, the acquisition equipment sends a data request to the check meter and the intelligent electric energy meter, a voltage signal and a current signal of the adopted intelligent electric energy meter are processed in a sampling circuit in the acquisition equipment through a metering chip to generate a standard electric energy pulse signal, and discrete voltage information data, discrete current information data, environmental temperature data and environmental humidity data of the intelligent electric energy meter are acquired, the acquisition equipment acquires, A/D converts and time synchronizes the accessed signals, converts the signals into SMV sampling value messages which accord with an IEC61850-9-2 protocol, converts the sampling value messages into HTTP messages, transmits the HTTP messages to preprocessing equipment at the rear end through a data network of electric power, and analyzes and stores the received HTTP messages, after receiving a check command of a remote server, the preprocessing device sends the analyzed IEC61850-9-2SMV sampling value message and an electric energy pulse output by the intelligent electric energy meter to a check meter, the check meter checks the intelligent electric energy meter according to the principle of real load verification of the intelligent electric energy meter and sends check data to the preprocessing device, the preprocessing device sends the check data to the remote server through a wireless transmission module, the remote server stores, analyzes and displays the check data, and when the detected intelligent electric energy meter is abnormal or has an error exceeding error, the remote server gives an alarm through an alarm unit.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A remote online verification method for an intelligent electric energy meter is characterized by comprising the following steps:
s1, arranging an electric energy meter end interface and a reserved check interface on the intelligent electric energy meter;
s2, connecting one end of the acquisition equipment with an intelligent electric energy meter end interface, connecting the other end of the acquisition equipment with a merging unit for sampling the current voltage value of the intelligent electric energy meter, connecting one end of the acquisition equipment with a reserved check interface, and connecting the other end of the acquisition equipment with a check meter;
s3, sending a data request to the calibrator and the intelligent electric energy meter by the acquisition equipment, and acquiring real-time sampling data in a preset sampling time period fed back by the calibrator and the intelligent electric energy meter according to the data request, wherein the real-time sampling data comprises electric energy data, environmental information data and electric energy pulse data of the intelligent electric energy meter;
s4, the acquisition equipment acquires, A/D converts and time synchronizes the accessed signals, converts the signals into SMV sampling value messages which accord with IEC61850-9-2 protocol, converts the sampling value messages into HTTP messages, and transmits the HTTP messages to the preprocessing equipment at the rear end through the data network of electric power;
s5, the preprocessing device analyzes and stores the received HTTP message, after a verification command of the remote server is received, the preprocessing device sends the analyzed IEC61850-9-2SMV sampling value message and the electric energy pulse output by the intelligent electric energy meter to the verification instrument, the verification instrument verifies the intelligent electric energy meter according to the principle of real load verification of the intelligent electric energy meter and sends verification data to the preprocessing device, the preprocessing device sends the verification data to the remote server through the wireless transmission module, the remote server stores, analyzes and displays the verification data, and when the detected intelligent electric energy meter is abnormal or the error is over-poor, the remote server gives an alarm through the alarm unit.
2. The remote online verification method of the intelligent electric energy meter according to claim 1, wherein the calibrator is configured to measure standard electric energy, obtain display electric energy of the verified intelligent electric energy meter, and perform error analysis on the standard electric energy and the display electric energy, the calibrator comprises a control module, a photoelectric conversion module, a transceiver module, and an infrared communication module, the control module controls the calibrator through a control signal, the photoelectric conversion module and the transceiver module are configured to receive a voltage or current sampling value packet, and the infrared communication module is configured to read historical data in the verified digital electric energy meter and set parameters of the verified digital electric energy meter in a debugging mode.
3. The remote online verification method for the intelligent electric energy meter according to claim 1, wherein the collection device comprises a channel switching module, an A/D converter module, a pulse collection module, a clock synchronization module, a controller module and a protocol converter module, supports collection of multi-channel signals, converts the collected signals into a set of time-synchronized digital signals, and completely conforms to the IEC61850-9-2 protocol of a digital substation.
4. The remote online verification method for the intelligent electric energy meter according to claim 1, wherein the electric energy pulse data is a standard electric energy pulse signal generated by processing a voltage signal and a current signal of the intelligent electric energy meter adopted in a sampling circuit in a collection device through a metering chip, the metering chip adopts a metering chip of an RN8302 model, the sampling circuit is a current transformer and a resistance divider, the electric energy data comprises discrete voltage information data and discrete current information data of the intelligent electric energy meter, and the environment information data comprises environment temperature data and environment humidity data of an operation place of the intelligent electric energy meter.
5. The remote online verification method for the intelligent electric energy meter according to claim 1, wherein a processor in the preprocessing device is connected with the metering chip, the processor is connected with a pulse input interface and used for receiving an electric energy pulse signal to be tested input by the tested electric energy meter, comparing the electric energy pulse signal to be tested with the standard electric energy pulse signal to generate an error value, and storing and recording the error value, and the processor adopts an integrated chip of an RN8312 type.
6. The remote online verification method for the intelligent electric energy meter according to claim 1, wherein the display unit displays real-time sampling data of the intelligent electric energy meter according to the analysis and verification result, and the alarm unit is used for sending corresponding abnormal alarm information when the relative error of the intelligent electric energy meter is larger than a preset maximum allowable error and the analysis and verification result of the intelligent electric energy meter meets a preset alarm condition.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113075474A (en) * | 2021-03-24 | 2021-07-06 | 深圳供电局有限公司 | Electric energy measuring system and method |
| CN113447881A (en) * | 2021-05-31 | 2021-09-28 | 国网河北省电力有限公司营销服务中心 | Measuring method and device of intelligent electric energy meter and terminal equipment |
| CN113655432A (en) * | 2021-09-09 | 2021-11-16 | 国网上海市电力公司 | Automatic identification and comparison method and system for intelligent metering electric energy meter |
| CN113671436A (en) * | 2021-09-09 | 2021-11-19 | 国网上海市电力公司 | Wireless detection method and system for intelligent electric energy meter |
| CN114002642A (en) * | 2021-11-02 | 2022-02-01 | 北京市计量检测科学研究院 | Intelligent electric meter field metering performance acquisition system and remote real-time monitoring system |
| CN114615253A (en) * | 2022-03-25 | 2022-06-10 | 浙江新再灵科技股份有限公司 | Remote debugging system and method for intelligent screen of elevator |
| CN114915862A (en) * | 2021-01-28 | 2022-08-16 | 中国石油化工股份有限公司 | Parallel data acquisition method and system based on wireless transmission |
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